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    Construction & Electrical

    Paint Quantity Calculator — Litres, Coats and Cans

    Use your wall perimeter and height, subtract openings and add ceiling area to estimate painted surface. Set coating count, manufacturer coverage, allowance and container size to work out paint litres, cans and estimated spend.

    MAKE IT SIMPLE
    Calculation details and limitations

    Use a product's verified per-coat coverage. Subtract openings only once; ceiling area is added separately.

    Result

    Worked examples

    20m walls×3m height, 10m² openings, 20m² ceiling, 2 coats, 10m²/L

    14 litres at zero waste

    Use your wall perimeter and height, subtract openings and add ceiling area to estimate painted surface. Set coating count, manufacturer coverage, allowance and container size to work out paint litres, cans and estimated spend.

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